TW201237296A - Fluid handling assembly having a multilayered composite pipe employing a mechanical coupling and method of assembling the fluid handling assembly - Google Patents

Abstract

A fluid handling assembly includes a first pipe. The first pipe includes an inner layer of a CPVC composition, an intermediate layer made of a metal at least partially surrounding the inner layer, and an outer layer made of a CPVC composition at least partially surrounding the intermediate layer. A first tubular coupling bushing has a first portion and a second portion. The first portion is coupled to the first pipe. The second portion has an engaging portion that is configured to engage to a mechanical fixture that sealingly engages the first pipe and a second pipe. A method of making the fluid handling assembly is also disclosed.

Description

201237296 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention generally relates to a fluid processing assembly comprising a multilayer composite tubular member, and a method for combining the fluid processing assembly. An exemplary embodiment provides a coupling bushing coupled to the tubular member, the coupling bushing configured to engage a mechanical fastener that sealingly engages the tubular member to another tubular member. [Prior Art] According to regulations, many buildings must have fire sprinkler systems. Moreover, more and more residential structures are equipped with fire protection systems. The CPVC piping system is ideally suited for use in fire water systems because of its resistance to money, light materials, women's clothing, and other desirable properties. In addition, many buildings and nearshore applications The situation includes a Drainage, Waste and Ventilation (DWV) system that can be associated with the transport/handling of potentially toxic chemicals. Because it is at least partially resistant to fire and smoke, the cpvc piping system is quite suitable for the above applications. According to current standards, the coaxial coupling of adjacent CPVC pipe sections is formed by a solvent bonding technique that is permanently bonded to each other. This technique requires the solvent adhesive t to have sufficient time to harden, and 'sometimes the existing cpvc piping system must be modified or repaired, but the solvent adhesive must be used to modify the piping to the dry environment. When using β', the piping system including the fire system and the Dwv system may be in continuous water pressure or varying water pressure. The plant is in the conventional CPVC camp system. Pipeline 201237296 Removed on the road and drained the water. The new cpvc f piece must be attached to the piping that is bonded by the solvent adhesive and requires a suitable hardening time. After that, the system was brought back to the line and tested: During this operation (possibly more than 24 hours or longer), at least a portion of the T-channel system will not function properly, resulting in, for example, a fire of rotation! The guard or DWV system is temporarily ineffective. The use of solvent dosing agents will result in a non-inverse cow connection. Therefore, misalignment or other undesirable conditions will be absent: easily smashed over. Moreover, some plumbing systems, such as those used in some food preparation systems, often need to be disassembled for cleaning. One way to solve this problem is to use a mechanical coupling that will hold the annular groove rolled or cut out of the "I" in the cow. This method avoids the use of solvent binders. However, CPVC pipe fittings are more flexible than metal pipe fittings. Due to the extra material edge of the entire system, the additional support increases the cracking time and material cost. Thus, a two-layer composite tubular member comprising a metal layer sandwiched between the inner layer of cpvc and the outer layer to provide the many advantages of the desired CPVC tubular member. κ still k supply :: 'The method of cutting or rolling the groove into the cpvc pipe fittings on the 34 multi-layer composite pipe. In the process of the (four) groove, :: = pressure: formed on the outer surface - ring circumference - depression. Cutting groove material. In, ▲ involved in hunting by blade or other cutting equipment to remove the wall material in the shell of the multi-layer composite pipe cutting or rolling will destroy the outer layer and the inner layer or separate the two layers j: ^ rolling out - groove possible Therefore, f proposes a method capable of combining a multilayer composite pipe

S 201237296 and eliminates the integrity of the known connectors. Process-related downtime but still maintain the tube in this technology. The composite pipe fittings are used to: :: fluid processing assembly, which contains more solvent binders. In this skill, it is also necessary to cut the fittings and procedures j: 耆 reduce the downtime of the irrigation system, and still have to mention:] The system of fire protection standards. Kind of σ strict = such as mechanical coupling n and accessories to be combined with cpvc #道 system, S, extension of some objects must be adapted to the nature of CPVC pipe:: use 'and should also meet the compression and support of cpvc material Therefore, there is a real need for mechanical fasteners that are compatible with the CPVC material in the pipe. It is also necessary to connect the non-composite plastic pipe fitting to the composite plastic pipe fitting or to another section, or to connect the non-composite plastic pipe fitting to a mechanical coupling device without forming a groove in the plastic pipe fitting. Moreover, some fire test standards specific to plastic pipe fitting systems have been developed. Incorporating mechanical parts and adapters into such systems requires that this hybrid system must meet some performance criteria. Therefore, there is a real need for a plastic/mechanical system that operates according to recognized fire standards. It is also necessary to connect a plastic pipe (composite or non-composite) to the metal pipe without the need to form a groove in the plastic pipe. The above needs can be achieved by using a coupling bushing as described in the specification. SUMMARY OF THE INVENTION 201237296 In an exemplary embodiment, a fluid processing assembly includes a tubular member. The first tubular member includes an inner layer of metal comprising a CPVC component and at least partially surrounding an intermediate layer of the inner layer, and an outer layer comprising a component and at least partially surrounding the intermediate layer. Preferably, the metal layer completely surrounds the inner layer of CPVC and the CPVC surrounds the intermediate metal layer externally. a first tubular coupling bushing has a portion and a second portion, the first portion is coupled to the first tubular member, and has a engaging portion configured to engage with a mechanical fixing member, and the fixing member sealingly engages the first tubular member To a second pipe. In another aspect of this exemplary embodiment, a method of making a flow assembly includes the steps of forming a first tubular member. The forming comprises the steps of: forming a metal tubular member; forming an inner layer consisting of CPVC and disposed on the inner side of the tubular member and forming an outer layer composed of CPVC and disposed on the outer side of the member. The method further comprises the steps of: forming a one-piece coupling bushing; coupling a first portion of the first tubular coupling to the first tubular member; forming a second tubular member, providing a mechanical solid and engaging the first tubular member A second portion of the bushing is coupled to the stator to sealingly engage the first tubular member and the second tubular member. Other embodiments of the exemplary embodiments of the present invention will be more clearly understood from the following detailed description, drawings and the accompanying claims. Description. In order to illustrate the present invention, Figure 1 first, containing CPVC, the intermediate layer is completely a first and second part, the mechanical body processes a tube layer, the upper portion; the tubular first tube position is coupled with the fixed part; Forms. 201237296 shows several exemplary embodiments. However, it is to be understood that the invention is not limited to the precise arrangements and mechanisms shown. Referring to Figure 1, in an exemplary embodiment, a portion of the fire sprinkler system, generally designated by the symbol 1 〇, includes a network of multi-layer composite tubular segments 12a, 12b, 12c, and 12d. 2, 2A and 4, each of the multilayer composite tubular members 12 includes an inner layer 2 formed as a hollow conduit, a metallic intermediate layer 3 surrounding the inner layer 2, and an amorphous thermoplastic polymer and surrounding the An outer layer 4 of the metal intermediate layer 3. An adhesive layer 5 is placed between the outer surface of the inner layer 2 and the inner surface of the metal intermediate layer 3. Further, a second adhesive layer 6 is placed between the outer surface of the metal intermediate layer 3 and the inner surface of the outer layer 4. The hollow inner conduit is formed by a length of hollow tubular member having a completely closed tubular outer surface and an opposite closed tubular inner surface. The hollow inner conduit can be made of a hard semi-crystalline thermoplastic or a rigid amorphous thermoplastic. The rigid amorphous thermoplastic material is a thermoplastic material that can be stretched beyond its point of relief. A hard amorphous thermoplastic used herein is a thermoplastic material, regardless of flexure or tension, at 23 〇c and 50% relative humidity when tested according to ASTM Method 1 Method D79〇, D638 or 〇882 It has an elastic modulus greater than 3 psi. In general, amorphous polymers have a crystallinity of less than 15 percent and, in 965, New York City, J〇hn Wiley and s〇ns

Alfrey'Jr., pp. 510-515, "High polymer mechanical gamma can be found in other information on amorphous thermoplastic polymers.", can be used to form the first layer of some suitable amorphous thermoplastics 1 201237296 Examples include: chlorinated polyvinyl chloride (CPVC), polyvinyl chloride (PVC), polyvinylidene fluoride (PVDF), polysulfide and polyphenylene sulfide, polycarbonate, acrylic resin such as methyl methacrylate, Styrene of acrylonitrile-butadiene-benzenediene polymer (ABS). The best amorphous thermoplastic is CPVC. An exemplary CPVC resin is a resin sold under the BLAZEMASTER® brand. The exemplary CPVC component has the following physical and thermal properties: Clay ASTM specific gravity of the BLAZEMASTER® brand (Sp. Gr.) 1.55 D792 IZOD impact strength (ft. Lbs/inch notched) 1.5 D256A 73°F psi elastic modulus (e) 4.23xl05 D638 Compressive strength (psi, 〇) 9600 D695 Wave sensation ratio (〇) 0.35-0.38 ___ 73°Fpsi working stress (s) 2000 D1598 Haicheng William factor (C) 150 ——— Linear expansion coefficient in/in°F(e) 3.4xl0*5 D696 Thermal conductivity BTU/hr/ft2/°F/in (k) 0.95 D177 Flash fire temperature ( °F) 900 D1929 Limiting oxygen index (L0I%) 60 D2863 Conductivity non-conductor - Extrusion temperature 414-425 °F (approximate) N/A Heat distortion temperature (°F) 217 —— .201237296 Although the system of Figure 1 1 〇 is shown as a fire sprinkler system, but it is understood that the form in this article can be adapted to other types of piping systems, including various water distribution systems, industrial systems such as drainage, waste and ventilation (DWV) systems, and other systems. . For example, another exemplary CPVC resin that can be used with the forms described herein is FLOWGUARD (a resin sold by the brand). Another exemplary CPVC component has the following physical and thermal properties: CPVC of the FLOWGUARD® brand ASTM Specific Gravity (Sp. Gr.) 1.55 D792 IZOD Impact Strength (ft.lbs/inch notched) 10 D256A 73DFpsi Elastic Modulus (E) 4.23xl〇5 D638 Ultimate Tensile Strength (psi) 8400 Π D638 Compressive Strength (psi, ο) 9600 D695 Haicheng William factor (c) 150 _ _ draw linear expansion coefficient in/inoF(e) 3.8xl〇*5 D696 Thermal conductivity BTU/hr/ft2/oF/in (k) 0.95 — .. A D177 Limiting Oxygen Index (LOI%) 60 D2863 Conductivity Non-Conductor_ _ _ Another exemplary CPVC resin is a resin sold under the CORZAN® brand. This exemplary CPVC resin has the following physical and thermal properties: 201237296 Nature CORZAN® brand CPVC ASTM specific gravity (Sp. Gr.) 1.52 D792 73°Fpsi elastic modulus (E) 4.23xl05 D638 Pulling point tensile strength (psi) 7320 D638 ------—compressive strength (psi, 0) 10100 D695 Boisen's ratio (0) 0.35-0.38 ——— 73°Fpsi Working Stress (S) 2000 D1598 Haicheng William Factor (C) 150 — Linear Expansion Factor in/inoF(e) 3·8χ10·5 D696 Thermal Conductivity BTU/hr/ft2/oF/in (k) 0.95 D177 Limit Oxygen Index (LOI%) 60 D2863 Conductivity Nonconductor — ·

BlazeMaster®, FlowGuard®, and Corzan® are registered trademarks of Lubrizol, Inc., and these CPVC materials are available from Lubizol, Inc. of Wickliffe, Ohio, USA. In general, the thickness of the inner hollow conduit is related to the desired final thickness of the thermoplastic composite tubular member. Preferably, the outer diameter of the inner hollow conduit should be at least 〇 1 mm larger than the inner diameter of the tube of the tubular member. The most preferred amorphous thermoplastic used to form the hollow inner conduit is cpvc. In one embodiment, the CpVc is one to two times thicker than the metal intermediate layer. In a preferred embodiment, the cpvc layer is 1.5 times thicker than the metal intermediate layer. In a preferred embodiment, the CPVC forming the hollow inner conduit has a thickness of about 〇6 mm. The hollow inner conduit is preferably formed by an extrusion process, but any other hollow conduit can also be used. x Wang Lai

-10- S 201237296 The first adhesive layer used between the outer surface of the inner layer 2 and the inner surface of the metal interlayer 3 is any suitable adhesive which can be used to form the thermoplastic of the inner t-cavity The polymer is permanently bonded to the metal intermediate layer 3. Since the thermoplastic material of the inner hollow conduit itself will not adhere to the inner metal layer, the adhesive is preferred. Preferably, the adhesive may be adapted to different coefficients of thermal expansion due to material differences between the two layers. The adhesive can be applied to the outer surface of the inner hollow conduit by spraying, extruding, brushing or any means. If the adhesive is sprayed, the adhesive can be diluted by the manufacturer. Preferably, the first adhesive is applied to the entire outer surface of the inner layer. As a further alternative, the first adhesive layer can be applied evenly around the outer surface of the inner layer as a series of loops. Generally, the first adhesive layer is applied as a thin layer having a thickness of from about 〇 〇imm to about 0-5 mm. The preferred thickness of the first adhesive layer is about 0.1 mm. The best way to apply the adhesive is to apply the adhesive to both sides of the intermediate metal | 3 before the metal layer 3 contacts the "ye inner layer 2 or the CPVC outer layer 4. The first adhesive may be any suitable bond. Materials, examples of suitable adhesives include: polyvinyl chloride and polyvinyl chloride copolymers, polyurethane or other isocyanide-based polymers, gas butyl and their copolymers, epoxides, acrylics | Preferably, the polyethylene conjugated copolymer. Preferably, the comonomer is acetonitrile acetate or cis-succinic acid. If used together with a hollow conduit in a CPVC, it is preferred. The adhesive layer is applied to the adhesive on both sides of the metal layer. The preferred adhesive is CIRE10B sold by Mercural Company of France (3). The salty adhesive is a double layer type. An adhesive selected from the group consisting of (1) thermosetting epoxy trees

*11- S 201237296 grease, which is a high molecular weight polyester adhesive as the bottom layer, and 孰activated crosslinkable polyurethane top coat; (li) acetophenonecarboxylic acid resin:, selective The epoxy resin is modified; and (iii) the epoxy modified polymer = copolymerized vinegar-carbamic acid s-based anti-corrosion # primer is accompanied by a knife-in-law parent-linked polyester - A top layer of a urethane polymer. The two-layer adhesive on the metal layer is 'dried to form a solvent-free dry adhesive before being used to construct the composite pipe. The intermediate @3 of the multi-layer composite pipe can be formed of any suitable metal material if it has a tensile strength greater than the tensile strength of the plastic. Examples of suitable intermediate metal layers include: ferrous materials, steel, steel, brass, and I. Further, an alloy may be used as long as it can provide support for the inner layer and the outer layer forming the composite tube structure. The metal intermediate layer 3 is preferably made of a smooth metal material. In general, the thickness of the metal intermediate layer should be between 〇5 and 1 〇. Preferably, the thickness should be between 〇.丨 to 4 〇mm, and the thickness is preferably between 0.3 and about 1.5 mm. For the aluminum intermediate layer, a thickness of about 0.4 mm is the optimum thickness. For the steel intermediate: genus layer, the optimum thickness is about the Suichuan claws. The metal layer can be -? The form of the tour has an open end that surrounds the inner hollow conduit. As another alternative, as will be described later in detail, the metal intermediate layer may also be formed of a metal sheet wound around the inner hollow conduit, and the sheet material may also be joined by a welded square & When you want to make a flexible tube, the best material for the metal interlining layer is: For tubes that cannot be bent, such as fire hoses, the preferred material may be steel. If the metal layer is not soldered, it must overlap when placed around the inner layer 2 of -12-201237296. The intermediate metal layers may overlap because the metal is wound at an angle or the opposite sides of the material abut each other to cause complete overlap of the metal. Preferably, when aluminum is used, the thickness is in the range of 5 5 to 5% of the outer diameter of the multilayer composite pipe. In the preferred embodiment, the aluminum layer is about 4 mm thick and the steel layer is about 1. mm thick. A second adhesive layer is used in the multilayer composite tubular member and is placed on the outer surface of the intermediate metal layer 3. The adhesive used in the intermediate layer may be any suitable adhesive which can be used to permanently bond the outer surface of the intermediate metal layer to the inner surface of the thermoplastic outer layer 4. Preferably, the adhesive may be adapted to different coefficients of thermal expansion due to material differences between the two layers. The adhesive can be applied to the surface by spraying, brushing, extruding or any means. The adhesive can be applied to the entire outer surface of the intermediate layer 3. As a further alternative, the adhesive layer can be applied in a series of loops evenly spaced around the outer surface of a second material. Generally, the adhesive is applied at a thickness of from about 0.01 to about 丑5 (, preferably 〇. The best way to apply the adhesive to both sides of the metal layer is as described above for the first Preferably, the adhesive layer of the second layer is equal to the appearance of the inner hollow conduit: the first layer of adhesive used between the inner surfaces of the interlayer I is the same. Different adhesives can be used as long as it can form a viscous copolymer between the outer surface of the inter-layer and the inner surface of the outer layer, and examples of the agent include polychloroethylene and polystyrene. And acrylic acid vinegar. When the outer layer is chlorinated gas, the preferred layer of the joint layer is the CIRE-l OB sold as the above-mentioned first layer of the adhesive layer from the Μ(10)ral 。£13-201237296. The application method and thickness of the layer are as follows: the application method and thickness of the first adhesive layer. The outer layer of the multilayer composite pipe member is formed of a rigid plastic as described above, preferably the outer layer is made of a hard plastic. , which may be an amorphous thermoplastic polymer "suitable for forming an outer layer of a multilayer composite tubular member Thermoplastic plastics include: chlorinated polyvinyl chloride (CPVC), polyvinyl chloride (PVC), polyvinylidene fluoride (PVDF), polysulfide and polyphenylene sulfide, polycarbonate, acrylic acid such as methyl methacrylate Resin, styrene-butadiene-benzenediene polymer (ABS) styrene. In an exemplary embodiment, the outer layer of the 'multilayer composite pipe fitting may be formed of the same material as the inner hollow conduit. As an alternative In some embodiments, if the inner layer is formed of an amorphous thermoplastic material, the outer layer may be made of an amorphous thermoplastic material different from the inner layer forming the hollow conduit. However, the material must be carefully selected to ensure the multilayer composite pipe fitting. Can be joined together to form a composite system. In general, the thickness of the outer layer is related to the desired final thickness of the multilayer composite tubular member. Preferably, the outer layer has a thickness of 1: 5 to 5 compared to the metallic intermediate layer. Range of 1: Preferably: when compared to the metal intermediate layer, the thickness ratio of the outer layer is ·1 · 3 to 3: 1. In the preferred embodiment of the multilayer composite pipe, the outer layer Formed by cpvc. In the preferred embodiment, the outer layer of cpvc and the inner layer each have an anisotropy of about 〇·6 mm of the itch Ja=t ^. If the composite pipe fitting is to be bent, the CPVC 劁忐 劁忐The thickness of the inner and outer layers of a ^ & should not be greater than about 3.18 mm (0.125 吋 1 10 λ Τ ) thicker than 3.18 mm CPVC has a tendency to rupture at the bending radius. ^ Π and 'inner layer The thickness should not be less than about 0.6 mm, because the thickness is less than, and the thickness of the coating is too thin to allow the solvent 201237296 adhesive to be reliably bonded. If the composite pipe is not intended to be bent, for example, a fire sprinkler using a steel metal layer. The inner and outer layers of the CPVC can be thicker than the bendable pipe. As noted above, a minimum thickness is required to ensure that the solvent-bonded tube is made. Preferably, the 'multilayer fluid conduit is provided with an outer diameter that conforms to the nominal outer dimensions of the nominal pipe or tube' which may be copper pipe size (CTS) or iron pipe size (IPS)' such as ASTM F438 or SDR 11, or ASTM D2846 Or Table 40 and/or 80 as defined by other ASTM standards or DIN 8063 and 8079 standards and/or BS 7291 standards. Preferably, the accessory can be used in the multilayer fluid conduit system of this exemplary embodiment. The fittings and piping are made to the normal size from the specified outside diameter. The internal dimensions of the fittings used are related to the standard outer diameter of the fittings contained in the fitting. The only limitation in the size of a multi-layer composite pipe fitting is the ability to bend the pipe if it is desired. This means that the diameter of the composite tubular member cannot be so large that the composite tubular member cannot be bent. An example of a f-curved tubular member of the exemplary embodiment is shown in Fig. 2A. However, all layers should be thick enough to provide the strength and rigidity required for a secure leak-proof system when a composite pipe is intended for use in a fluid conduit system, regardless of whether the fluid is a gas, liquid or polymer. The exemplary embodiment comprises a multilayer composite tubular member in which the inner layer 2 forming the hollow conduit is made of CPVC. The winter intermediate layer 3 is aluminum foil, and the outer layer 4 is also CPVC. The thick layer of the aluminum layer is designed to be or about 1 to 5 percent of the outer diameter of the multilayer composite pipe. The different tube sizes are shown in the diagram below. The measurements of these layers and all 3 measurements are listed in mm. The pipe size is according to DIN 8079.

S -15- 201237296 Pipe fitting size (diameter) CPVC Inner layer thickness Aluminum layer thickness CPVC Outer layer thickness Total wall thickness 16 0.6 0.4 0.6 1.6 20 0.6 0.4 0.6 1.6 0.6 0.6 0.4 0.6 1.6 32 0.6-1.0 0.4-0.8 0.6 1.6-2.8 40 0.6 -1.0 0.4-0.8 0.6-1.0 1.6-2.8 50 0.6-1.5 0.4-0.8 0.6-1.0 1.6-3.3 .63 0.6-1.5 0.4-0.8 0.6-1.0 1.6-3.3 More preferably, the aluminum layer is the outer diameter of the pipe. 1.5%. The ratio of the thickness of the CPVC layer to the thickness of the aluminum in the pipe is 1: 5 to 3:1. Optimally, the ratio of the thickness of the CPVC to the thickness of the aluminum in the multilayer composite pipe is 3:2. The adhesive used on both sides of the intermediate metal layer in this exemplary embodiment is an adhesive that is compatible with CPVC, such as CIRE-10B sold by Mercural. In the case of fire sprinkler applications, the pipeline network is in fluid communication with a plurality of fire sprinklers. Moreover, the tubing in the piping system 10 can be larger than the tubing used in a typical fire sprinkler system. For example, the fittings in the piping system 10 can be used in DWV applications, residential and commercial hot and cold piping applications, and industrial applications. The fittings in piping system 10 can have diameters from 0.5 inches to 24 inches, with the most common diameter sizes from 2 inches to 8 inches. Figure 5 shows, in block diagram form, exemplary steps of a method for making a multilayer composite tubular member. The machine that performs these steps is from Nexane Deutschland

S -16 - 201237296

Purchased by GmbH. Referring to Figure 5', a preferred method of fabricating a multilayer composite tubular member 12 using cpvC and a metallic inner layer is shown. In addition to trimming the edges of the metal strips coated with adhesive on both sides, this step can be performed independently of the other steps, and assuming the metal strips are trimmed prior to feeding to a metal forming and welding step, the other steps of the process are as follows : Extrusion of the inner layer made of CPVC: The powder or granules of the cpvc component are fed from a feed hopper into a twin-screw extruder to operate at temperatures ranging from 1380c to 216°C (280oF to 420°F). To produce an extrudate having the desired thickness and outer diameter. Cooling the inner layer of CPVC: The hot inner layer is vacuum formed in a forming die and sleeve to control the outer layer of the inner layer to a desired extent and extruded through a tube die to produce a thin walled tubular member. The inner layer is sized to be cooled to 2KC to 37.74. (: (a temperature between 70 and 10 (rF). Preferably, the cooled inner layer is drawn through a squeeze roller to control the outer diameter before the inner layer is fed to the metal forming and welding machine Thickness. Feed metal strip to a trimming machine: The edge of the metal strip coated with adhesive on both sides has just been trimmed to the desired width. This adhesive is preferably a double layer of adhesive, after drying: a thin-dry layer and having a thickness in the range of 1 μi 50 μm. The metal sheet is trimmed to remove any oxidized metal from the edge to be welded. Therefore, 'the inner layer is formed in CPVC. Between the surroundings

S -17- 201237296 The cutting step should be carried out within ten minutes, preferably no more than one minute. Oxidation at the edges can result in poor soldering. The metal strip is formed and welded to form an intermediate metal layer: When the trimmed metal strip enters the forming and welding machine, it is immediately fed underneath the inner conduit of the CPVC. The metal strip is formed around the inner layer of the CPVC such that the trimmed edge produces a gap of about 0 25 mm (0 01 inch) which is small enough for the laser of the appropriate strength to weld the metal strip to the head in the longitudinal direction so that A fully enclosed metal layer is formed around the inner layer of the CPVC. The strength of the laser is chosen to avoid damage to the polymer in the inner layer due to overheating of the inner layer of the CPVC, but still provides a weld that completely penetrates the thickness of the metal. Laminating the inner layer of CPVC with the intermediate metal: In order to ensure that the outer diameter of the composite of the inner layer and the intermediate metal layer of CPVC can be maintained within the desired tolerance, along a series of oppositely arranged grooved rollers Pressing in the circumferential direction. The compacted composite of the inner layer of the CPVC and the intermediate metal layer is heated: the compacted composite of the inner layer of the CPVC and the intermediate metal layer is heated to about 1 490 c to 17 1 ° C in an induction heater. A temperature in the range of (300 〇F to 340 °F) to activate the adhesive and preheat the metal surface to a temperature at which the metal can be applied to the outer layer of the CPVC. Extruding the outer layer of the CPVC: The heated composite of the CPVC inner layer and the intermediate metal layer is fed into the sealed front chamber of the crosshead mold, just prior to pressing the CPVC outer layer onto the heated and adhesive coated metal. Vacuum to the previous room -18- 201237296. A vacuum in the range of 31 to 56 cm (12 to 22 inches) of mercury column creates a negative pressure around the metal layer, causing the CPVC extruded onto the metal layer to be strongly absorbed into the metal coated with the adhesive. Ensure adhesion of the adhesive and adhesion of CPVC to the adhesive at temperatures ranging from 1490C to 232oC (300oF to 450°F). This mold ensures that the thickness of the outer layer of C P V C is controlled within the desired range. Cooled composite pipe: The hot composite pipe from the crosshead die is cooled to room temperature in the cooling water tank before being cut into sections or rolled into a coil. The above steps indicate a preferred method for manufacturing a composite tubular member, and other methods or steps in the preferred method may be used. An alternative, in some embodiments, the preformed rigid thermoplastic tubular member may be coated with an adhesive. The metal intermediate layer can be placed on the layer coated with the adhesive. then

The outer layer of U u is applied to the top layer of the metal intermediate layer: the ground layer can be extruded on the gold π "A selectively" can be used - the co-extrusion die is co-extruded in the early and the second The point joint layer and the thermoplastic layer. And a mechanical fixing member which is not included in the individual coupling bushings 9a, 9b in the embodiment can be connected to the winding back, A village s piece #12a and

Figure 3B and 3C show the coupling bushing 9, A for connecting the multi-layer composite pipe fittings (1) and 12be for the pipe fittings :: The bushing 9a has the structure of the 盥田认n Lu仟I2a. Therefore, the similarity of the A: ox hole coupling bushing 9b is similar, and will be explained for the pipe member 9a. This example is from the _ 卞1 2a% coupling bushing „ . Λ coupling bushing (shown in Figures 3 Α and 4Α) contains a hollow end of the hollow end) ^ has a flange with a radial extension

S -19- 201237296 92, this flange extends outward from the end of the body 9〇. The body 9 is tapered so that it does not scratch or absorb the adhesive when inserted into the tubular member 12a. The inward taper of the body 90 is 0.4 relative to the horizontal when the body 90 contacts the flange 92. To 4.0. In the range. At the axial midpoint between the individual ends of the flange 92, a continuous annular groove 96 is formed in the flange 92 which divides the flange 92 axially into equal firsts. Section 98 is aligned with the second section. The groove 96 is scored on the outer surface of the flange and, in an exemplary embodiment, is for an accessory that is used with a tube having a nominal diameter of 2 inches, the groove 96 extending into the projection The edge of the edge 92 is 63 inches deep. The depth of the groove 96 can be from about 6 inches to about 2 inches, and the depth of the groove 96 should not exceed the thickness of the flange 92 by about 6〇% to join the inner hollow body 90 of the bushing 9. The outer diameter should be smaller than the inner diameter of the multilayer composite tubular member ,, however, the difference between the outer diameter of the tubular member 12a and the inner diameter of the tubular member a2a cannot exceed the amount recommended in ASTM D2846. The exemplary flange 92 is configured to have the same outer diameter as the outer diameter of the multilayer composite tubular member 12a. The body 90 of the exemplary coupling bushing 9 is inserted into the multilayer composite tubular member 12a until the second section 1 of the flange 92 abuts against the edge of the open end of the tubular member i2a. The inner surface 2 of the multilayer composite pipe 12a may be permanently bonded to the outer surface of the hollow cylinder 90 of the coupling shaft 9 by an adhesive (not shown). Preferably, the coupling sleeve 9 is made of the same material as the inner hollow conduit 2 of the composite tubular member 1 2 a. The exemplary coupling bushing 9 for a nominal 2 inch diameter has a thickness of 〇 2 95 5 leaves in the axial direction. The width of the continuous annular groove 96 at the second portion of the coupling bushing 9 will depend on the diameter of the tubular member to be joined. For nominal diameters from 0 75 inches to -20-201237296 90 mm (3.5 inches), the preferred width of the continuous annular groove 96 is about 7.95 mm (0.313 inches). For nominal diameters from i〇〇mm (4 inches) to 150 mm (6 inches), the width of the continuous annular groove 96 is approximately 疋9.53 mm (0.375 inches). The preferred width for the nominal diameter of the continuous annular groove 96 of 2 mm (8 inches) is about 11.13 mm (0.438 inch). For nominal diameters from 25 mm (1 inch) to 500 mm (20 inches), the width of the continuous annular groove 96 is approximately 12 '7 mm (0.5 inch). The preferred width for the nominal annular diameter ' continuous annular groove 96 from 550 mm (22 inches) to 600 mm (24 inches) is about 14-30 mm (0.563 inch). For a nominal pipe diameter from 7 95 mm (〇 313 ft) to 14_30 mm (0.563 ft), the width of the continuous annular groove 96 is approximately 7.95 mm (0.313 inch). For a nominal pipe diameter of up to 2 inches, the total length of the coupling bushing 9 (including the first portion and the second portion) is preferably about 3 inches. For nominal diameters greater than 2 inches, the total length of the coupling bushing 9 is preferably about one inch larger than the nominal diameter of the tubular member. Therefore, the total length of the coupling shaft 9 can be from about 3 inches to 25 inches. A preferred adhesive for adhering the multilayered, - |丨 "ν η agricultural 茚 2 to the outer surface of the hollow cylindrical body 9G of the lining 9 is (9) a solvent locating agent. The CPVC solvent cement may be sprayed, brushed or in any manner in the region of the central cylindrical body connected to the hollow conduit 2: in the outer surface of the hollow cylindrical body 9 of the coupling bushing 9 and/or complex: On the inner surface of the hollow hollow conduit 2. Then, the coupling bushing is brought into the composite ... 2a until the end of the composite pipe member (2) abuts against the flange 92 of the ... 9 . Then, the coupling bushing 9 is preferably rotated at 201237296 by 90 degrees to uniformly apply the solvent adhesive. Examples of suitable CPVC solvent cements are available from IPS, Oatey, Verhagen, and Henkel. The CPVC solvent cement is normally prepared by dissolving a CPVC resin in a solvent or a mixture of a plurality of solvents, and the concentration of the C P V C resin is usually from about 15% to about 25% by weight based on the weight of the CPVC resin. The CPVC solvent adhesive may also have different other constituents, for example, a thickenerotropic agent, a colorant, and various additives. As shown in Fig. 6, 'in this exemplary embodiment, the first mechanical retaining member or coupling device 16 sealingly engages each of the coupling bushings with the tubular members 12a and 12b' the tubular members 12a and 12b in an attached relationship. Close end-to-end relationship. The use of an exemplary coupling device 16 does not require the use of a solvent linker to couple the coupling shafts together. As shown in Figure 6, each of the coupling bushings 9 includes an annular sealing surface portion disposed between the grooves 96 and the ends. As shown in Figures 8 and 9, the exemplary coupling device 16 includes an annular resilient sealing member 46 that sealingly engages the annular sealing surface portions 4, 42 in the operative position. The material formed by the seal 46 is preferably compatible with the Cpvc composition to avoid degradation or stress crack formation in the tube. The unplasticized EPDm rubber is a preferred material for the starting and sealing material 46. In an exemplary embodiment, the sealing member 46 can include a bifurcated inner sealing surface 47. Referring to Figures 8 and 9, in this exemplary embodiment, the coupling device 16 includes a pair of coupling segments that may have substantially equal configurations. Therefore, for the sake of brevity, only the structure of the segment 48 will be described in detail. The coupling section 48 includes an arcuate body 54 having a first end 56, a second -22-201237296 end 58 and an internal concave surface 60 extending between the first end and the second end. A longitudinal passage 62 extends from the first end 56 to the second end 58 along the concave surface 60. The longitudinal passage 62 is designed to receive the sealing member 46». In this exemplary embodiment, a flange 64 extends from each end 56, 58. Each of the flanges has a fixing member hole 66 therethrough. When the coupling device 16 is in a set, the first end and the second end of one of the coupling segments are used to present the respective first and second ends to the other of the coupling segments. The sealing member 46 is snapped into an inner circumferential region 70 which includes a longitudinal passage 62 and is bounded by the internal concave surface 60 (as shown in Figure 6). In this exemplary embodiment, a pair of mechanical fasteners 7 2 are used to connect the pair of coupling bushings. Each flange 614 includes a generally planar surface 65 that is formed to abut against a corresponding surface of another associated bushing. The engagement of these surfaces provides a means to limit the compressive forces applied to the coupling bushings 9a and 9b. In this exemplary embodiment, the arched body 54 is generally made of ductile iron, but other materials may be used in other embodiments. This exemplary coupling device and the pair of coupling bushings are assembled in eight s. 9 packs - $ s parts assembly, which can be effectively verified by one or more test protocols. The system method includes forming - a plurality of tube segments 12, 乂 & member slaves 1 2 being in fluid communication, wherein the tube segments a

Formed from CPVC ingredients. In-line system S 2: Sealing and snapping in a tight end-to-end relationship, without the need to make a 'splicing station' and holding them together with one middle. Take the ^ ^ s s pieces of water for a long time. Instead, the at least one pair of pipe sections are reversible and

S -23· 201237296 Releasable Sealing Engagement The first mechanical fastener or an exemplary method includes a one-to-one fitting fitting test agreement that includes the pair of tubular segments and coupling devices in an exemplary manner The step of 'seally engaging the pair of tubes 12b in the method includes forming the coupling bushings 9a, 9b with a continuous annular groove 96 at a predetermined longitudinal distance of one end thereof. A seal 46 is formed from a material that is chemically compatible with the CPVC pipe, and the seal is placed between the grooves and the end of the coupling bushing 40, 42. Thereafter, a pair of coupling sections are placed around the 'to cause the seal to be placed in the channel β 2 of each coupling section, the internal longitudinal channel forming the inner ring for testing of the mechanical connector: One of the disclosed exemplary embodiments of the present invention is intended to meet or exceed the UL system test for the fire sprinkler system. Some tests accepted. Exposure to fire test (UL1821, Section 13) 测试 Test for ceiling down, straight and side wall hangings and accessory assemblies. Exposed fittings and fittings assembly: ^not combustible, separate or leaking; and) should be maintained at the expected operating position of the sprinkler. _~^ After exposure, the fittings and fittings should be _^ pressure An internal hydrostatic pressure is up to five minutes and the junction device is 16. Accepting a test 〇 piece 1 2 a, the upper part is separated by a piece of elastic ring dense 〖made, this sealing surface annular seal an internal longitudinal 3 area 70. It is a test gauge for fittings and machines. Below, the representative of the model is placed. Withstand equal to the least rupture or -24 - 201237296 Bending torque test (UL2 1 3, paragraph! 2) $ All sizes of T-shaped objects and cross-shaped objects are tested, including - threaded outlet connection, except 1/ 2 British pairs with 3/4 English leaves outside the exit. When the specified bending moment is reached, the fitting and fitting connection assembly should not leak or rupture. During the test, the assembly is pressurized to the rated pressure. The required bending moment is calculated from twice the weight of the pipe filled with water and twice the maximum distance between the fittings of the sprinkler system installed in the standard ANSI/NFPA 13. CPVC bending moment pipe fittings are filled with H20 (pounds/呎). Hangers (呎) Torques (pounds-呎) 1 inch 0.675 6 24.3 1 1/4 inch 1.079 6.5 45.6 1 1/2 inch 1.417 7 69.6 2 inches 2.224 8 142.3 2 and 1/2 inches 3.255 9 263.7 3 inches 4.829 10 482.9 by assembly bracket at least 1 2 inches (305 mm) on either side of the center of the coupling, one The increasing force of the strand is applied to the center of the coupling until the desired bending moment is reached. Vibration test (UL1821, section 19) for 2x1 threaded outlet and 2x (l and 1/4) inch groove outlet T word

S -25- 201237296 Shaped parts and (2 again l/2) xl threaded outlet, (2 plus ι/2) χ (1 1/4) grooved outlet, 3 X (1 1/2) inch thread Grooved cross-shaped objects into the 4 (8) test. The 2 1/2 inch cross-shaped object has a 1 inch/threaded outlet on one side and a 1 丨/4 inch pair on the other side. 3 The cross-shaped object of the central leaf has a 1&1;""" thread exit on the ~ side and a groove exit of 1 1/2 inch on the other side. The fittings and fittings will withstand shock effects for up to 30 hours without compromising performance characteristics. After the vibration test, each test assembly shall comply with the special regulations for hydrostatic testing. Final Assembly Test (UL1 821, Section 22) Tests for all combinations of tube size and hole size for Τ-shaped and cross-shaped objects. The sample shall withstand an internal hydrostatic pressure equal to the rated calendar force or higher as specified in the installation and design manual, and other internal hydrostatic pressures associated with the hardening time specified in the design manual for up to two hours without rupture. , separation or leakage. Hydrostatic Pressure Test (UL1 821, Section 23) will test all combinations of tube size and hole size for Τ-shaped and cross-shaped objects. Representative official and accessory assemblies shall withstand five times the rated internal hydrostatic pressure - minutes' without cracking, separation or leakage. Pressure Cycling Test (UL1 821, Section 24) All combinations of tube size and hole size for Τ-shaped and cross-shaped objects will be tested. Representative fittings and fittings should be able to withstand the amount of fittings and fittings. • 201237296 Pressure cycling from zero to two times 3000 cycles without cracking, separation or leakage. After the pressure cycle, the fitting and fitting assembly should meet the hydrostatic pressure test. Temperature Cycling Test (UL1821, Section 25) All combinations of tube size and hole size for T-shaped and cross-shaped objects will be tested. After accepting a temperature cycle from 35〇F(i rC) to the maximum rated temperature, the representative fitting and fitting assembly shall comply with the hydrostatic pressure test. The fittings and fittings are filled with water without air, with a hydrostatic pressure of 50 pSig^45 kPa) and received from 7. The temperature is cycled to a maximum rated temperature of 35 °F. Each assembly is maintained at a specific temperature for 24 hours. A total of five complete cycles. Long-term hydrostatic pressure test (UL1 82 1, paragraph 27) will test all combinations of tube size and hole size for T-shaped and cross-shaped objects. The fittings and fittings shall be capable of withstanding the h〇〇p stress as specified below at the maximum rated temperature applied to the crucible for 1000 hours without rupture, separation or leakage. Type Standard size ratio Requires soil stress psi (Mpa) CPVC ------ 13.5 2310 (15.93) During and after exposure, the fittings and fittings are inspected to confirm signs of cracking, seepage or joint separation.

-27- 201237296 Surface Burning Characteristics Test (UL723/ASTM 84 (NFPA 255 and UBC 8-1)) Tests for representative fittings and fitting assemblies for water distribution systems. Fire test responses for comparative surface burning characteristics of building materials can be applied to exposed surfaces such as walls or ceilings. The sample is placed at the position of the natural plate and the surface to be evaluated is exposed downward to the ignition source for measurement. The material, product or assembly can be mounted in the test position during the test. Therefore, the sample can be held in place by its own structural quality, using an additional bracket along the test surface or fixed to the back. The purpose of this test method is to determine the relative combustion characteristics of the material by observing the flame propagation along the sample, and to report the flame spread and the smoke diffusion. However, there is not necessarily a relationship between these two measurements. In a special test, the FLOWGUARD® CPVC components and fittings described herein meet the 25/50 flame extension/smoke diffusion regulations and are suitable for women in space. The disc says that the tube and fittings described herein have a flame extension index of 5 and a smoke diffusion index of 35 when the 1/2 inch filled pipe fittings and corresponding fittings are used in the fluid handling assembly. In another example, when a 2 inch water filled tubular member and corresponding fitting are used in the fluid treatment assembly, the tube and fittings described herein have a flame extension index of 〇 and a smoke diffusion index of 20. In yet another example, when a 1 /2 inch empty tube member and a corresponding fitting are used in the fluid processing assembly, the flame elongation index of the tube and fitting described herein is 〇, and the smog expansion

-28- S 201237296 The dispersion index is 5. In another example, when the 2 inch hollow tube and corresponding fitting are used in the fluid treatment assembly, the tube and fittings described herein have a flame extension index of 5' and a smoke diffusion index of 25. In another test, the CORZAN® CPVC fittings and fittings described herein meet the 25/50 flame extension/smoke diffusion regulations and are suitable for installation in space. For example, when a 1/2 inch filled water fitting and corresponding fitting are used in a fluid handling assembly, the tube and fittings described herein have a flame extension index of 0' and a smoke diffusion index of 20. In another example, when the pipe fittings and corresponding fittings filled with water are used in the fluid assembly, the flame elongation index of the pipe fittings and fittings described herein is 〇, and the smoke diffusion index is 15 °. An exemplary apparatus and method for forming the fluid treatment assembly described above achieves one or more of the above objectives. The fluid handling assemblies described herein are intended to be capable of operating at pressures up to 125 psig. The normal fluid pressure is from about 50 to about 10 (^sig. In DWV systems, sometimes the system may operate under vacuum conditions, so the fluid handling system of the present invention can operate under pressure or in a vacuum without seeping The term "CPVC pipe fitting" as used herein means that the pipe member is a CPVC polymer of at least 50 parts by weight, and preferably 7 liters by weight of CPVC polymer. Other materials are often added to the CPVC resin. Together, to produce a CPVC composition. Other materials may include other polymeric materials, such as impact modifiers, flow aids, and the like. Other materials <including stabilizer 1 filler, colorant, antioxidant, and the like This can be understood by those skilled in the art.

S -29- 201237296 Other thermoplastic articles are to 50% by weight of the polymer having the specified plastic pipe. That is, the 'pcv tube has a PVC polymer that weighs at least 3:5%, and the ABS tube has at least 5 weight percent @ ABS polymer, and the like. The fluid treatment system of the present invention, 'the first thermoplastic pipe member is a rigid pipe member, and therefore the plasticizer for softening should be kept at a very low level, and it is preferable not to use a ratio of more than 5 weight percent, because these softening plastics The agent will make the tube more flexible and reduce physical properties. The preferred embodiment described above relates to joining multiple & CPVC composite tubular members together by a coupling bushing and a mechanical fastener to create a releasable connection. This unique connecting bushing has a special effect if the user wishes to use a mechanical fastener to join the composite tube to create a releasable connection, since the composite tubular member is not suitable for forming a cut through the cutting or rolling in the tubular member. Groove. The coupling bushing 9 is preferably made of the same polymeric material (not necessarily the same composition) as the innermost layer of the tubular member, which is necessary to ensure optimal bonding of the adhesive to ensure the use of a solvent. The coupling bushing 9 is preferably made by injection molding using an appropriate injection molding component of the same polymer type as the innermost layer of the pipe member to be joined. This unique coupling bushing 9 can be used to join different types of thermoplastic tubular members together using a mechanical fastener. The coupling bushing 9 can also be used to join the thermoplastic tubular member to the metal tubular member using a mechanical fastener. In one embodiment, for joining different types of thermoplastic tubular members, the first length of CPVC tubular member is coupled to the second length of PVC in a fluid handling system. CPVC pipe fittings are cpvc composite pipe fittings as described above, -30- 201237296 or standard non-composite CPVC pipe fittings will have a coupling bushing 9 made of cpvc component, which can be bonded to CPVc pipe by solvent... composite pipe fittings or standard Non-composite. The VC pipe fittings may have a coupling bushing made of PVC component, which is connected to the end of the PVC pipe fitting 'then'. The machine 1 fixing member shown in Fig. 8 and Fig. 9 can be used to offset (4). Fix the cpvc coupling bushing and lining. The mechanical fittings are used to make the joined tubulars reversible. In another embodiment, the first segment of the CPVr is: a second length of metal tubular member. The metal two 4 can be attached to the ^ 〇 CPVC s s cattle to have a groove T C that is rolled to the tubular member. The C bush can have a coupling bushing 9 that is solvent bonded to the trailing end of the CPVC pipe. There is a lack of 闽 ^ _ L7 κ . . . , a mechanical fastener shown in FIG. 8 and FIG. Use the tender: to secure the $ CPVC coupling bushing to the metal pipe • mechanical fixture so that the connected pipe system is reversible. In another embodiment, a solvent-based adhesive (for example, CPVC, PVr, bucket, weight thermoplastic, or PVDF) can be attached to a second section of the plastic body that cannot be used with the bath agent. a polythene tube produced; for example, a polypropylene or a poly-bonded bushing, the tube of which is: viscous;::= may have a, ώϊ ^ the end of the official member, and the coupling axis is viewed from the camp The same solvent bonding method is used... to be used to promote good UA/d-bonded pipe fittings. The same type of polymer as the bottom of the coupling bushing will also be solvent-adhered to the pipe fittings...:: And the material attached to the material that cannot be used by the adhesive technique can be ', ', bonded, and the connection base is determined, & 1 # bushing or f #β 0 The wire is implanted in the joint S piece' and resistance heating is applied to melt the joint surface and allow

S -31- 201237296 Frozen this surface is welded at _. Then, as shown in Figs. 8 and 9, the non-inductive coupling bushings are connected by a mechanical fixing member, and the yoke and the sinus can be reversible by the mechanical fixing member. In the above description, 'has been used - some terms to understand the charm, lack: TL ΛΑ 』 ~ North and the solution is limited to this, the purpose of these terms is descriptive: and widely interpreted. Moreover, the description and drawings are merely exemplary and not limited to the details. In the scope of the following patent application, any feature of the means being interposed should be interpreted as covering any means that ',', perform a function that is known to perform the above functions, ', , , & The features and structures shown in the text or their equivalents. It should be noted that the description of the embodiments should not be considered as an exemplary color to be included. The invention is limited to the features, discoveries, principles, and operation of the present invention, as well as the advantages that can be obtained, the structures, devices, components, configurations, and uses of the present invention. As a result, this system, farming, operations, methods and relationships. IM cattle, combination, and profit range. The following application is specially designed for the following [Simple Description] Layer composite pipe fittings, mechanical solid drawing 1 series, an exemplary fire sprinkler system _ α contains a fluid processing assembly, the assembly contains multiple Μ 思 思 思 , , System Package Assembly and λ Figure 2 is a cross-sectional view of one of the fluid treatment s of the present exemplary embodiment. Multi-layer composite Fig. 2A is a multi-layer complex of the fluid processing assembly of the exemplary embodiment.

S 32- 201237296 The pipe fitting is a section cut from the bend. 3A, 3B and 3C are schematic illustrations of the insert coupling bushing of the fluid treatment assembly for assisting in joining the multilayer composite tubular members. Figure 4 is a cross-sectional view of the insert coupling bushing joined to the multilayer composite tubular member. Figure 4A is an exploded view of the multilayer composite tubular member and the insert coupling bushing. Figure 5 is a schematic illustration of one possible embodiment for making a multilayer composite tubular member. Figure 6 is a partial cross-sectional front elevational view of a pair of multi-layer composite tubular members joined end to end by a mechanical fastener. Figure 7 is a perspective view of a sealing member used in a mechanical fastener. Figure 8 is a side elevational view of the insert and mechanical fastener assembly. Figure 9 is a bottom plan view of a coupling section of a coupling device. [Main component symbol description] 2 Inner 3 Gold 4 Outer 5 Viscous 6 9th, 9a, 9b 10 fire 12 more 12a, 12b, 12c, 12d Pipe 16 40, 42 ring layer (hollow pipe) is an intermediate layer Layer 2 adhesive layer lining lining disaster sprinkler system (pipe system) layer composite pipe fitting segment knot device sealing surface portion -33- 201237296 46 sealing member 47 sealing surface 48, 50 coupling section 54 arched body 56 first End 58 second end 60 concave surface 62 longitudinal channel 64 flange 66 fastener hole 65 plane 70 circumferential region 72 mechanical fastener 90 cylindrical body 92 34-

Claims (1)

201237296 VII. Patent Application Range: 1. A fluid treatment assembly comprising: a) a first tubular member comprising: an inner layer comprising a CPVC component, an intermediate layer comprising a metal and at least partially surrounding the inner layer, And an outer layer comprising a CPVC component and at least partially surrounding the intermediate layer; and b) a first tubular coupling bushing having a first portion and a second portion, the first portion being inserted into the first tubular member and The inner layer of the first tubular member is engaged, and the second portion has a continuous annular groove on an annular outer wall thereof, the continuous annular groove is configured to releasably engage a mechanical fixing member, the mechanical fixing The piece sealingly engages the first tube member to a second tube member. 2. The fluid treatment assembly of claim 1, further comprising: the second tubular member, the second tubular member comprising an inner layer comprising a CPVC component, an intermediate layer comprising a metal and at least partially surrounding the inner layer, And an outer layer comprising a CPVC component and at least partially surrounding the intermediate layer; and a second tubular coupling bushing having a first portion and a second portion, the first portion being inserted into the second tubular member and the second portion The inner layer of the tubular member is engaged, wherein the second portion of the second tubular coupling bushing has a continuous annular groove on an annular outer wall thereof, wherein the mechanical fastener releasably engages the first tubular coupling The second portion of the bushing and the second portion of the second tubular coupling bushing sealingly engage the first tubular member and the second tubular member. 3. The fluid treatment assembly of claim 1, wherein the first portion of the first tubular coupling bushing extends into the first tubular member. 4. The fluid treatment assembly of claim 3, wherein the first portion of the first tubular coupling bushing extends into the first tubular member for a predetermined distance such that the first tubular coupling bushing The second portion abuts the first tubular member, and the second portion of the first tubular coupling bushing has an outer diameter substantially equal to an outer diameter of the first tubular member. 5. The fluid treatment assembly of claim 3, wherein the first portion of the first tubular coupling bushing tapers in a direction away from the second portion of the first tubular coupling bushing . 6. The fluid treatment assembly of claim 2, wherein the first and second tubular coupling bushings are in end-to-end close relationship with one another. 7. The fluid treatment assembly of claim 2, wherein the first and second tubular coupling bushings comprise CPVC components and are in end-to-end close relationship with each other, wherein the first and the The second portions of the second tubular coupling bushing each include a continuous annular groove formed in a wall surface of the respective second portion, the continuous annular groove and one end facing one of the tubular coupling bushings One end of the other tubular coupling bushing is spaced apart by a predetermined distance, and wherein a portion of the wall portion of the coupling bushing between the end of the tubular coupling bushing and the groove includes a seal And s-36--201237296 wherein the mechanical fastener comprises a coupling device, wherein the coupling device comprises an elastic seal, wherein the elastic seal is operable to annularly engage the sealing surfaces and span the first And an end of the second tubular coupling bushing, wherein the seal comprises a material that is chemically compatible with the CPVC component. 8. The fluid treatment assembly of claim 1, wherein the buddy coupling axis comprises a cpvc component. 9. The fluid treatment assembly of claim 2, wherein when assembled, the assembly is operable to pass a first predetermined test protocol. 10. The fluid of claim 8 is as claimed in claim 8 Processing assembly, wherein the first predetermined test agreement includes: exposure to fire test (UL 1 82 1 section 13), bending moment test (UL 2丨3 section 12), vibration test (UL1821 section 19) , assembly test (UL1 821 section 22), hydrostatic pressure test (UL1821 section 23), pressure cycle test (UL1821 section 24), temperature cycle test (UL182) L section 25), long-term hydrostatic pressure test ( The fluid processing assembly of claim 2, wherein the mechanical fixing member comprises a coupling device that is operable to be sealingly The first tubular coupling bushing and the second tubular coupling bushing are engaged and brought into end-to-end adjacent connection relationship without the use of a solvent adhesive. 12. The fluid treatment assembly of claim 2, wherein -37-201237296 to >, the first tubular coupling bushing is to the first tubular member. 9 'Combined adhesive and coupled 13 · The mechanical fixing member according to claim 2 includes ws ^ ', wherein the pair of connecting sections, wherein - "丄" includes - 梹 shaped body, the chess body a longitudinal passage extending from the first end and the second second end, the second end, and the inner concave surface extending from the concave surface; and at least one mechanical a fastener that is detachably connected to the pair; the detachably connected pair of couplings, wherein the elastic annular seal extends over the longitudinal passage of each of the coupling sections when the coupling device is assembled Inside. 1 4. A method of making a fluid treatment assembly comprising the steps of: a) providing a first tubular member, wherein the first tubular member comprises: a metal tubular member; an inner layer comprised of CPVC and disposed on the tubular member The inner side, an outer layer, is composed of CPVC and disposed on the outer side of the tubular member; (b) a first tubular coupling bushing is disposed; U) a first portion of the first tubular coupling bushing is coupled to the first portion (d) providing a second pipe member; (e) providing a mechanical fixing member; (0 engaging a second portion of the first tubular coupling bushing and the mechanical-38-201237296 mouthpiece to sealingly The method of manufacturing a fluid processing assembly according to claim 14, wherein the first and second tube members comprise: a second metal tubular member; An inner layer consisting of CPVC and disposed on the inner side of the first braided member; and a second outer layer disposed on the outer side of the second tubular member by a CPVC composition I; the method further comprising the following steps: (g) Set one a two-piece makeup foot S-shaped coupling bushing; (h) coupling a first portion of the second tubular coupling bushing to the second tubular member; and wherein in the edge step (f), the first tubular coupling bushing The second portion and the second portion of the second tubular coupling bushing are sealingly engaged to the second tubular member by the mechanical fastener. 16. The manufacturing fluid of claim 14 A method of processing an assembly, wherein in the step (c), the first portion of the first tubular coupling bushing is inserted into the first tubular member and engaged with the inner layer. The method of manufacturing a fluid processing assembly according to the item 5, wherein the second portions of the first and second tubular coupling bushings each comprise a continuous annular groove in an annular outer wall of the second portion. And wherein the step (h) includes engaging the mechanical fastener in each of the grooves. -39-201237296 1 8. The method of manufacturing a fluid processing assembly according to claim 14 of the patent application, Wherein in the step (c), the first tubular coupling bushing A portion is snapped to the first tubular member by a solvent adhesive. 1 9. A tubular coupling bushing having a first portion and a second portion, wherein the first portion is sized to be inserted into a One end of the tubular member is coupled to the inner surface of the tubular member, and wherein the second portion includes a continuous annular groove in an annular outer wall thereof. 20. The tubular coupling bushing of claim 19 Wherein the first portion is tapered in a direction away from the second portion. 2. The tubular coupling bushing of claim 20, wherein the degree of tapering is from about 0.4 degrees to About 4 degrees. 22. The tubular coupling bushing of claim 19, wherein the continuous annular groove is located at a midpoint of the second portion. The tubular coupling bushing of claim 19, wherein the bushing is a bushing formed by injection molding. The tubular coupling bushing of claim 19, wherein the continuous annular groove has a depth of from about 0.06 inches to about 0.2 inches. The tubular coupling bushing of claim 19, wherein the continuous annular groove has a width of from about 0.313 inches to about 0.563 inches. 26. A method of making a fluid processing assembly comprising the steps of: a) providing a first tubular member, wherein the first tubular member has an inner surface that is adhesive with a polymer solvent; -40- 201237296 (b) a first tubular coupling bushing having a first portion and a second portion, and wherein the bushing is made of the same polymer material as the solvent-bondable inner surface of the first tubular member And wherein the second portion of the first tubular coupling bushing has a continuous annular groove in an annular outer wall; (c) the first portion of the first tubular coupling bushing is glued with the solvent The inner surface of the first tubular member; (d) a second tubular member is disposed, wherein the second tubular member is made of a thermoplastic polymeric material that is the same as or different from the polymeric material of the first tubular member, or the second tubular member is a a metal tubular member; (e) if the second tubular member is a thermoplastic tubular member, a second tubular coupling bushing is provided, wherein the second tubular coupling bushing is made of the same thermoplastic polymeric material as the inner surface of the second tubular member And the second tube The coupling bushing has a first portion and a second portion, and wherein the second portion of the second tubular coupling bushing has a continuous annular groove in an annular outer wall, and if the second tubular member is metal a tubular member rolling a continuous annular groove in an annular outer wall of the metal pipe member at a predetermined distance from the end of the metal pipe member; (f) if the second pipe member is a thermoplastic pipe member, Attaching the first portion of the second tubular coupling bushing to the inner surface of the second tubular member by solvent bonding or thermal bonding; (g) providing a mechanical fixing member; and (h) engaging the first portion The second portion of the tubular coupling bushing and the mechanical-41 - 201237296 fasteners sealingly engage the first tubular member and the second tubular member. 27. The method of claim 24, wherein the first tube is selected from the group consisting of a CPVC pipe fitting, a PVC pipe fitting, an ABS fitting, and a PVDF fitting. 28. The method of claim 25, wherein the first tube is selected from the group consisting of a CPVC tube, a PVC tube, an ABS tube, and a PVDF tube. 29. The method of claim 28, wherein the first tube and the second tube are made of the same polymeric material. The method of claim 28, wherein the first tube and the second tube are made of different polymeric materials. -42-